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103 lines
2.7 KiB
C++
103 lines
2.7 KiB
C++
// SPDX-License-Identifier: Apache-2.0
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/*
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Copyright (C) 2023 The Falco Authors.
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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#include "actions.h"
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#include "falco_utils.h"
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#include <sys/stat.h>
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#include <filesystem>
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using namespace falco::app;
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using namespace falco::app::actions;
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static int create_dir(const std::string &path);
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falco::app::run_result falco::app::actions::create_requested_paths(falco::app::state& s)
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{
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if(s.is_gvisor())
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{
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// This is bad: parsing gvisor config to get endpoint
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// to be able to auto-create the path to the file for the user.
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std::ifstream reader(s.config->m_gvisor.m_config);
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if (reader.fail())
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{
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return run_result::fatal(s.config->m_gvisor.m_config + ": cannot open file");
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}
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nlohmann::json parsed_json;
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std::string gvisor_socket;
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try
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{
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parsed_json = nlohmann::json::parse(reader);
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}
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catch (const std::exception &e)
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{
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return run_result::fatal(s.config->m_gvisor.m_config + ": cannot parse JSON: " + e.what());
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}
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try
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{
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gvisor_socket = parsed_json["trace_session"]["sinks"][0]["config"]["endpoint"];
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}
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catch (const std::exception &e)
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{
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return run_result::fatal(s.config->m_gvisor.m_config + ": failed to fetch config.endpoint: " + e.what());
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}
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int ret = create_dir(gvisor_socket);
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if (ret != 0)
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{
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return run_result::fatal(gvisor_socket + ": " + strerror(errno));
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}
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}
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if (s.config->m_grpc_enabled && !s.config->m_grpc_bind_address.empty())
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{
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if(falco::utils::network::is_unix_scheme(s.config->m_grpc_bind_address))
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{
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auto server_path = s.config->m_grpc_bind_address.substr(
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falco::utils::network::UNIX_SCHEME.length()
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);
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int ret = create_dir(server_path);
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if(ret != 0)
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{
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return run_result::fatal(server_path + ": " + strerror(errno));
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}
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}
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}
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// TODO: eventually other files written by Falco whose destination is
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// customizable by users, must be handled here.
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return run_result::ok();
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}
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// This function operates like `mkdir -p` excluding the last part of
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// the path which we assume to be the filename.
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static int create_dir(const std::string &path)
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{
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std::filesystem::path dirPath(path);
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try {
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std::filesystem::create_directories(dirPath.parent_path());
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} catch (const std::exception& ex) {
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return -1;
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}
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return 0;
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}
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